EP 0088553 A1 19830914 - Method and apparatus for forming multicolour image.
Title (en)
Method and apparatus for forming multicolour image.
Title (de)
Verfahren und Gerät zur Herstellung von Mehrfarbenbildern.
Title (fr)
Procédé et appareil pour la formation d'images à couleurs multiples.
Publication
Application
Priority
- JP 2890882 A 19820226
- JP 2994982 A 19820226
Abstract (en)
The invention provides an apparatus for forming a multicolor image, comprising a photoconductive drum (10) which comprises a conductive substrate (11), and a photoconductive layer (12) and a transparent insulating layer (13), a first charger (14) to perform primary charging, a first light source (15) to expose the entire surface of the photoconductive drum (10), a second charger (16) to secondarily charge the transparent insulating layer (13) at the second polarity, a second light source (17, 18, 19, 20, 21) to emit light, an amount of which is controlled to have two levels in accordance with first and second color image data, a first developing unit (22) to develop the first color image, a third light source (23, 25) to perform a second entire-surface exposure of the photoconductive drum (10), and a second developing unit (24, 26) to develop the second color image.
IPC 1-7
IPC 8 full level
G03G 13/01 (2006.01); G06K 15/12 (2006.01)
CPC (source: EP)
G03G 13/01 (2013.01); G06K 15/129 (2013.01)
Citation (search report)
- [Y] DE 3102960 A1 19820114 - RICOH KK [JP]
- [A] DE 2917228 A1 19791031 - RICOH KK
- [A] EP 0001619 A1 19790502 - RICOH KK [JP]
- [A] DE 2825385 B2 19810521
- [Y] Patent Abstracts of Japan vol. 5, no. 60, 23 April 1981 & JP-A-56-12650
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0088553 A1 19830914; EP 0088553 B1 19861217; DE 3368472 D1 19870129
DOCDB simple family (application)
EP 83300925 A 19830222; DE 3368472 T 19830222